Plotly

Package

library(tidyverse)
library(plotly)

About plotly

• plotly uses the htmlwidget framework, which allows plots to work seamlessly and consistently in various contexts.

• ggplot: take a dataframe and a mapping from data variables to visual aesthetics. ggplot2 won’t know how to geometrically represent the mapping until we add a layer to the plot via one of geom_*() or stat_*() functions.

• Main functions

  • plot_ly(): transforms data into a plotly object.

  • ggplotly(): transforms a ggplot object into a plotly object.

To ensure plotly is installed correctly.

plot_ly(z=~volcano)

Working with plotly

1. First create a plot with ggplot.

p <- ggplot(txhousing, aes(date, median)) +
  geom_line(aes(group = city), alpha = 0.2)
p

2. The ggplotly() function: converts a ggplot object to a plotly object.

Arranging multiple htmlwidgets with flexbox

library(shiny)
fluidPage(
  fluidPage(
    fluidRow(p),
    fluidRow(
      column(6, p), column(6, p)
    )
  )
)